Improvement in molding iron pipes



UNITED "STATES,

PATENT i WILLIAM DOYLEH, ALBANY, NElV YORK.

VnvlPaovialvletlrIN I srlols'oim.;-V IRON Pipes',

Specification forming partof Letters Patent-No. 28,6lfdated May 15,1860.

hereby declare that the following isa full, v.

clear, and exact description ofthe same, reference being had to theannexed drawings, forming part of this specification, in which?- Figures1 and 2 are vertical central sections of my invention, the two planes ofsection crossing each other at right angles; Fig. 3,a detached verticalsection of the flask of ithe same, and the means for forming the mold ofthe male screw, which is at lone end of the pipes to be cast; Fig. l,anenlarged detached view of the core-bar; Fig. 5, a detached plan or topview of the flask; .figsz'f6, andi 8; detachedviewsP of the partsemployed for Aforming the molds of the screws at the ends of the pipesto be cast.

Similar letters of reference indicatec'orre sponding part-s in theseveral figures.A

The object of thisy invention is to obtain a `machine by whichgreen-sand molds for casting pipes may be expeditiously .formed and therpipes cast in a vertical position, the d-iieulty hitherto attending theshrinking and bending of the corebar avoided, and the mold enabled to beformed at its ends with male andk female screw molds, so thatthe pipesmay be casty with the screws.

The invention is applicable to the forming of molds for cylindrical,polygonal, elliptical, or other shaped pipes.

To enable others vskilled in the art to fully understand and constructmy invention, I will proceed to describe it.

A represents Va rectangular lframe having two longitudinal parallelbars,a a, on its upper en d,l on which ways b b b b.' are formed. On

the ways b b'there is placed a frame, B, of

rectangular form, and'having a traverse-bar, c, in its upper part, saidbar c having a socket, d, at its center,in which the hub e'of abevel-wheel, C, is iitted, and retained therein by pins f,

-which pass through the socket d and into a bevelwheel passes, ther-ebconnecting the bevel-wheel to the screw an causing thelat-l ter to turnwith the former. To the lower'end of the screw D there is attachedahollow cyl inder, G, which is a triie smaller in diameter than thepipes to be cast, and to itslowerend a cutter, H, is secured. Thiscutter is of tubular form, its lower end being its cutting'-` fcdge, andits upper end is secured on the lower end ofthe cylinder G. The upperpart of the cutter H is slightly larger in diameter than the cylinder G,and the lower cutting-edge ofthe cutter is a trifle smaller in diameterthan the interior of the cylinder G. (See Fig. 2.) l In the lower partof the fralncB is provided a traverscbar, k, through the center of whichthe cylinder G passes, the former serving as a bearing for the latter.

isa rod,fwhicl1is fitted within the hollow screw This rod passesthrougha crossbar, l. at the upper part of the frame B, and is sustainedby albutton, m, on its upper end. The lower end of rod I has a smallsocket, n, at itslower'end, said socket being provided with an internalscrew, the object of which will be hereinafter described.

-Jlis aiiasl ,which is simply a -bor of rect-- angular form, provided.with a horizontal ange, 0.at two opposite sides of its upper end, saidflanges resting. on the ways b b of the bars a of the frame A, asshown-clearly iu- Fig. 1.` Both the frame l5 andthe flask .I

bars p p are attached, each cross-bar having a i ring,"q,'at.its center.The sides of the flask which are provided with the ilanges o are ratherhigher than the other two, and the cross-bars p are secured to theVlower sides.

The ilask J may be adjusted underneath the frame B, and is placed insuch position when the machine is in use.

each link rr'-is of a diameter equal to the diameter of the core whenthe latter is completed. The bottom o of the flask .I is secured to itby hooks w, or other equivalent device,

K is a core-bar, which is formed of a series snuit-Lully.as hereiiadescr d.,

egzel.

withdrawal of the prints L M fromfthe same referring to Fig.v 1L,j l vHaving thusdeseribedAmyiove'nt'ion, .whabl claim as new," ad desire, to.secure by. Let-tens'A Patent, is-f l A '1.` Tiaeeore-buD K, mede insections, Qrf'with' Jointsis; inoombinatonwit-h e szmgl mold,- W'hen thesections ofsaid bar' areeo'nstfructed" .with a'oges' tj, for1silppoilgin g the sand, sub;

""iu the flask. h Thiswill be fuliyimdersteodbyf screw N and cylinder O,lthe-latter being prov vided with anl'internal screw-thread and fittedlon the former, noloperate asfia'd for the pur- .Spese herein set forthlspeeifflei"of the hollow screw S, formed of two longitudinal.-palrtsfin connection with the br .j Q, p'rozed wiglcthe mm'ulapplateR, having an internal serewgthread to receive'the'serew S.

5. .The cutter H,' lata'ehedto a-cyiinder, G, "or other" shped't ubeeorrespondipgs Well s theeutter H, tothe Vshape ofx the pipes tobe-cast,`and used iii eonneotiougwitlh a Siew, ."andzgeari-ngor onlie;`pijopermeohanism, for @theyiiposecfofforengfthutbedovmthrougii`WILLVIAiufpyne.

Witnesses): e

' 'JOHN O. COLE,

ELIAsf-P. HALE.

